Using the right foil will make learning much easier.
I learned on the Rush Randle, but I found Carafino was easier to learn on.
A friend of mine has a Carafino, pretty nicely built.
I've been on it, behind a 1300cc jetski.
Not done it under a kite.
Needed the foot bindings for doing it with the ski.
Under a kite (especially strapless) looks far easier on your knees and ankles.